John a



J. A. GROSI-ION. Elevator.

.Ne..`224,9 o'o.' Patented Feb. 24, 1880.

Witnesses; I n vena 74,'

www e *ff/Weewew' @vee- K @egg e I Figure l is a central verticallongitudinal sec- UNITED. STATES PATENT QEEICEe JOHN A. enOsHON, or NEWYORK, N. Y,

ELEVATO R.

SPECIFICATION forming part of` Letters Patent No. 224,900, datedFebruary 24, 1880.

Application filed December), 1879. l

` `To all whom it may concern Be it known that I, JOHN A. GROSHON, of

` New York, in the county of New York and State `of New York, haveinvented anew and useful Improvement in Elevators, of which thefollowing is a specification, reference being `ondarywater-cylinder,with their pistons and connections, and gearing forcontrolling the loperation oi' the said cylinders, as hereinafter fully described.

` Referring to the accompanying drawings,

tion ot' the invention.

same.

`A indicates the steam-cylinder,having a piston, a, and B the secondaryor water cylinder,

Fig. 2 is a top'view of supplied with the piston b. The` cylinders A Bare mounted horizontally, so that their longitudinal centers are on thesame plane, and are separated a given distance by the guiderods D, whichextend from the inner head of one cylinder to tha-tof the other, andserve as a tramway for the carriage d, hereinafter described. f

The pistons a b are connected by thepistonrods E, which are ot' suitablelength to insure the proper working ot the pistons, and pass out throughthehcad ofone cylinder into that ofthe other. Thepistons a b areconnected, in4 the present instance, by two rods, E, which lare on thesame horizontal plane, and connect with the pistons on either side ot'the centers of same. `This construction is preferred not only because itrenders the machinery more durable, but also because it insnresya more`regular a-nd even movement ot' thepistons.

The rods E, between the cylinders A B, are i protected by the guide-rodsD, and at' a suitable point are rigidlysecnred to the' carriage d. Thuswhen therods E and pistons a b are moved either toward or from the rearot' the cylinders the carriage d will have a corresponding movement.Upon the" ends of the carriage d are monntedthe pulley-wheels c, overwhich and the `similar wheels f passes the rope F, by which theelevator-caris either raised or lowered.

lWhen the carriage d is forced toward the water-cylinderit draws therope F and causes the car to ascend; and when this movement of thecarriage is reversed `the rope is slackened and the car permitted todescend.

Above, and connected with the cylinders A B, are the chests H I,containing the balancefalves h t', which latter are connected and intheir movement controlled by the rod K. Upon the rod K, at about itscenter, is secured the rack Z, which meshes with the pinion L, mountedupon one end of the shaft M, upon the other end ot' which is secured anactuating wheel, m..` Thus whenever this latter wheel is rotated eitherto the right or let't it imparts a similar movement to the pinion L,which then forces the rod K and the balancevalvesh either forward orbackward, controlling theentrance of steam and water, respectively, tothe cylinders A B and the entire operation of' the machine. Thebalancevalves hit' are supplied with a central bore, and the valve 'ialso withthe apertures n, which lead from the centralbore through thewall of the valve.

The chest l is connected with the water-cylinder B at its'inner endbythe port N, and at its outer end by the pipe P, which passes from theend of the said chest and enters the upper part ofthe cylinder Badjacent to its outer end. Thus when the piston bis moved toward theouter end of the cylinder B, the balancevalve being' properly adjusted,the water passes up through the pipe P, thence into the chest I andvalve t, and out through the apertures fn, and down through the port Ninto the cylinder B again, on the opposite side of the piston b, which,when its movement is reversed, causes the water to return up through theport N, the valve t', and down into the cylinder again through the pipeP.

The chest H is connected with the steamcylinder A at the forward end ofthe latter by the port p, and at the inner end by the port t, and issupplied with a proper exhaust and a port whereby steam is admitted.

When it is desired to cause the elevator-'car to ascend thebalance-valves h t' are moved by the rack Z and pinion L to open theport p and the port N. Through the former then passes into the cylinderA the steam, which forces IOO der A through the port t.

To set the car in`motion again it is only necessary to open the saidport p by reversing this last movement of the pinion L.

When it is desired to lower the elevator-car the valve It is movedsimply enough to open the port t, when the steam will enter on theopposite side of the piston ai, and force it, with the rods E, carriaged, and piston b, to their former position., slackening the rope F andpermitting the car to descend. During this movement, the water in thecylinder B is forced up through the port N, the valve t', and pipe I),and then down into the cylinder B at its rear end, as before described.

If desired, in lieu of employing the pipe I?, I may make a directconnection between the chest and cylinder by forming a port, .'10, asshown in dotted lines in Fig. l.

IThe operation above set forth shows one method in which the inventionmay be successfully practiced 5 but I am enabled by a slightmodification to present a construction of equal utility, which I willnow proceed to describe.

In this modified form I dispense with the pipe I? and the port p, and inlieu of the pipe I), I employ a pipe, T, which passes from the rear endof the chest I to a suitable reservoir or tank, V. In this instance,when it is desired to elevate the car the port N is opened. Thisallowsthe water from the tank V and pipe T to pass through the valve iand port N into the cylinder B 111 front of the piston I), forcin g itrearward, which movementdraws the rods E, carriage d, piston a, and ropeF also toward the rear, elevating the car. The car may be stopped at anypoint by simply closing the port N, and started again by opening it.When the car is to be lowered, if the weight in it is not sufficient toovercome the force of the water and drive it back into the tank V, steammay be admitted to the cylinpiston a and its connections toward thefront of the machine, drivingv the water into the pipe T and tank Vthrough the port N and valve t' and lowering the elevator-car.

This will force the.

I propose, in the operation of the elevator, tov

apply a suitable governor to the valves h' i, which will be actuated bythe speed of the car to open or close, partially or wholly, the portsadmitting the steam and Water to the cylinders, and thus cause the saidcar to have a regular andeven movement. This governor, in connectionwith a novel form of valve, I intend to make the subject of a separateap,- plication for patent.

What I claim as my invention, anddesire to secure by Letters Patent, is-

1. The cylinders A B, having suitable ports, and the pistons a b,connected by rods, in combination with suitable valves for controllingsaid ports, said valves being connected by a rod, K, operated by a rackand pinion, substantially as set forth.

2. In combination with the cylinders A B, having suitable pistons andports, the valves h t', connected by the rod K, operated by a rack andpinion, substantially as set forth.

3. The cylinders A B, having pistons ab and rod or rods E, the formercylinder being supplied with the ports p t, and the latter with the portN and pipe P, iu combination, with the hollow balance-valves 7L i, rodK, rack Z, and pinion L, substantially' as set forth.

4. The cylinders A B, properly supplied with pistons and ports, incombination with the hollow balance-valves h z', the latter beingsupplied with the apertures n, substantially as specified.

5. The combination of the cylinders AB, having suitable ports andpistons connected by the rod or rods E, driving the carriage d, with thehollow balance-valves h i, connected by a rod, K, operated by a rack andpinion, substantially as described.-

6. The cylinders A B, having, respectively, the port t and the port N,and supplied with pistons connected by the rod or rods E, driving thecarriage d, in combination with the balance-valves h i, connected andoperated by a rod, K, and with the pipe T and tank V, substantially asset forth.

In testimony that I claim the foregoing improvement in elevators, asabove described, I have hereunto set my hand this 20th day of December,1879.

CHAs. C. GILL, JAMES T. RYAN.

IOO

